Ключевые слова: abstract, aging, air, airplane, alloy, aluminum, ancient, backdrop, backgrounds, black, bolt, construction, dirty, fighter, frame, grain, grainy, gray, heavy, industry, iron, machinery, macro, material, metal, metallic, military, obsolete, old, panel, part, pattern, plane, plate, process, retro, rivet, row, rusty, screw, silver, spotted, steel, striped, strong, technology, textured, tool, vehicle, work,